<!-- wp:core/text-columns {"width":"center"} -->
<div class="wp-block-text-columns aligncenter columns-2">
    <div class="wp-block-column">
        <p>One</p>
    </div>
    <div class="wp-block-column">
        <p>Two</p>
    </div>
</div>
<!-- /wp:core/text-columns -->
